"Balance" won the August 2016 design challenge from The Origami Forum; the competition's theme was "mechanical origami". Every submitted model had to be folded from a single square, and "Balance" was no exception! The model mixes both practical and action origami. Gerardo–from Colombia–is very passionate about practical origami. He has created over 50 functional models, and "Balance" is among his most popular and challenging ones. It came to be thanks to years of experience designing and folding origami boxes, and related models. Watch the model in action: https://photos.google.com/share/AF1QipMpMPh0ilnlb1bkeT-tBN_btZlIrODQ9IMA...
Participants must have experience dividing the paper into thirds to attend.
One square of 12 x 12 to 14 x 14 in (30 x 30 to 35 x 35 cm) and 70 to 90 g/m² kraft paper, and at least eight standard-size marbles or pebbles (of the same size of marbles) to insert inside the fulcrum. They aren't for the "weighing pans" on the left and right. They are for the fulcrum, the triangular prism at the bottom that supports the beam. Balance won't work without the marbles or pebbles inside! Tweezers might also come in handy. This is a good option for the paper: https://kimscrane.com/shop/home/3718-kraft-paper-double-sided-brown-660m...